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Cylinder Selection

Magnetically Coupled Cylinder Selection Procedure
1.  Compile Application Requirements
To determine the appropriate Cable Cylinder model for an application, compile the following information:
  • Available pressure (PSI)
  • Weight of load (lbs. or kgs.)
  • Orientation of load (lbs. or kgs.)
  • Velocity of load (in./sec. or mm/sec.)
  • Stroke length (in. or mm)
2.  Select Cylinder Size
  • Consult the Theoretical Force vs. Pressure charts
  • Cross reference the load force (or load weight if force is not known) and the available operating pressure. If the intersection falls below the diagonal line, the actuator will accommodate the application. If the intersection is above the diagonal line, a larger cylinder bore size should be considered.
NOTE: Additional force may be required to obtain the necessary acceleration for vertical or horizontal loads.

3.  Determine Coupling Force Requirements
Use the following formula:

F = .013 x Weight x Velocity2

Calculated value must be less than the Magnetic Coupling Strength, See Performance Data under each individual Model.

4. Determine external cushion and stopping requirements.
The piston on a magnetically coupled actuator is not physically connected to the carriage and load. Therefore, it is recommended that an external means of cushioning or stopping always be employed. Refer to application guidelines for additional information on final velocity calculations.